Experimental Study of Vortex Breakdown in a Cylindrical, Swirling Flow
Author : José L. Stevens
Publisher :
Page : 142 pages
File Size : 17,98 MB
Release : 1996
Category : Aerodynamics
ISBN :
Unsteady Combustor Physics
Author : Tim C. Lieuwen
Publisher : Cambridge University Press
Page : 427 pages
File Size : 41,74 MB
Release : 2012-08-27
Category : Technology & Engineering
ISBN : 1139576836
Book Description
Developing clean, sustainable energy systems is a pre-eminent issue of our time. Most projections indicate that combustion-based energy conversion systems will continue to be the predominant approach for the majority of our energy usage. Unsteady combustor issues present the key challenge associated with the development of clean, high-efficiency combustion systems such as those used for power generation, heating or propulsion applications. This comprehensive study is unique, treating the subject in a systematic manner. Although this book focuses on unsteady combusting flows, it places particular emphasis on the system dynamics that occur at the intersection of the combustion, fluid mechanics and acoustic disciplines. Individuals with a background in fluid mechanics and combustion will find this book to be an incomparable study that synthesises these fields into a coherent understanding of the intrinsically unsteady processes in combustors.
Fluid Vortices
Author : Sheldon Green
Publisher : Springer Science & Business Media
Page : 905 pages
File Size : 28,83 MB
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 940110249X
Book Description
Fluid Vortices is a comprehensive, up-to-date, research-level overview covering all salient flows in which fluid vortices play a significant role. The various chapters have been written by specialists from North America, Europe and Asia, making for unsurpassed depth and breadth of coverage. Topics addressed include fundamental vortex flows (mixing layer vortices, vortex rings, wake vortices, vortex stability, etc.), industrial and environmental vortex flows (aero-propulsion system vortices, vortex-structure interaction, atmospheric vortices, computational methods with vortices, etc.), and multiphase vortex flows (free-surface effects, vortex cavitation, and bubble and particle interactions with vortices). The book can also be recommended as an advanced graduate-level supplementary textbook. The first nine chapters of the book are suitable for a one-term course; chapters 10--19 form the basis for a second one-term course.
Ames Research Center
Author :
Publisher :
Page : 4 pages
File Size : 46,32 MB
Release : 1968
Category : Aeronautics
ISBN :
Book Description
Numerical Simulation of Vortex Breakdown by the Vortex-filament Method
Author : Y. Nakamura
Publisher :
Page : 20 pages
File Size : 21,70 MB
Release : 1983
Category : Numerical analysis
ISBN :
Book Description
The vortex-filament method was applied to the simulation of vortex breakdown. The principal vortex region was represented by multiple filaments, and an axial velocity component was induced by a spiral winding of the filaments. First, an accuracy check was performed for a cylindrical swirling flow field that can be simulated to any accuracy by increasing the number of filaments. Second, an axisymmetric-type vortex breakdown was simulated, with experimental data serving asupstream conditions. The calculated axial- and theta-velocity contours show the breakdown of the vortex, including a rapid change in the vortex core, followed axially by a recovery zone and then a second breakdown. When three-dimensional initial data are used the second breakdown appears to be out of the spiral type in correspondence with experimental observations. The present method can easily be used to simulate other types of vortex breakdown or other vortex flows with axial velocity.
Turbulence, Coherent Structures, Dynamical Systems and Symmetry
Author : Philip Holmes
Publisher : Cambridge University Press
Page : 403 pages
File Size : 28,92 MB
Release : 2012-02-23
Category : Mathematics
ISBN : 1107008255
Book Description
Describes methods revealing the structures and dynamics of turbulence for engineering, physical science and mathematics researchers working in fluid dynamics.
Swirling Flows and Flames
Author : Toufik Boushaki
Publisher : BoD – Books on Demand
Page : 120 pages
File Size : 25,14 MB
Release : 2019-06-26
Category : Science
ISBN : 1838807438
Book Description
Swirl flows are used in a wide range of industrial applications. In non-reacting cases, examples of applications include vortex amplifiers and reactors, heat exchangers, jet pumps, and cyclone separators. In reacting cases, swirlers are widely used in combustion systems, such as gas turbines, industrial furnaces, boilers, gasoline and diesel engines, and many other practical heating devices. Effects of using swirl on flow and combustion are significant and varied, and concern, for example, aerodynamics, mixing, flame stability, intensity of combustion, and pollutant emissions. The purpose of this book is to present recent research efforts to understand and characterize swirling flows of different types and in different applications. These include gaseous, liquid, and solid fuels in order to enhance combustion systems and their energy efficiency. Swirl flows are very complex and the studies proposed in this project are based on different means, including theoretical calculations, numerical modeling, and experimental measurements.
Scientific and Technical Aerospace Reports
Author :
Publisher :
Page : 704 pages
File Size : 39,69 MB
Release : 1995
Category : Aeronautics
ISBN :
Book Description
Coarse Grained Simulation and Turbulent Mixing
Author : Fenando F. Grinstein
Publisher : Cambridge University Press
Page : 481 pages
File Size : 17,20 MB
Release : 2016-06-30
Category : Science
ISBN : 1107137047
Book Description
Reviews our current understanding of the subject. For graduate students and researchers in computational fluid dynamics and turbulence.
Direct and Large-Eddy Simulation IX
Author : Jochen Fröhlich
Publisher : Springer
Page : 656 pages
File Size : 25,61 MB
Release : 2015-01-27
Category : Technology & Engineering
ISBN : 3319144480
Book Description
This volume reflects the state of the art of numerical simulation of transitional and turbulent flows and provides an active forum for discussion of recent developments in simulation techniques and understanding of flow physics. Following the tradition of earlier DLES workshops, these papers address numerous theoretical and physical aspects of transitional and turbulent flows. At an applied level it contributes to the solution of problems related to energy production, transportation, magneto-hydrodynamics and the environment. A special session is devoted to quality issues of LES. The ninth Workshop on 'Direct and Large-Eddy Simulation' (DLES-9) was held in Dresden, April 3-5, 2013, organized by the Institute of Fluid Mechanics at Technische Universität Dresden. This book is of interest to scientists and engineers, both at an early level in their career and at more senior levels.
